A bit of a strange day that seemed to be 1 step forwards and 2 backwards.   Jim had taken a series of filler pieces home to clean up ready for refitting.  These go onto the ceiling in between the monitor ribs and had not been screwed into place, just a tight fit between the ribs.  He noticed that the ends were slightly tapered suggesting that they needed to be fitted from above before the ceiuling booards were in place.  So we started fitting them on C side where the boards were not on yet and Paul found a way opf forcing the ribs slightly apart so that they sprang back and held the spacerss tightly.  We then had to unscrew 5 boards on A side to do the same procedure.  However All the spacers eventually got fitted and we then realised that 4 rather strangely shaped little pieces completed the run between the last rib and the bulkhead.  We got two of these in place but need to finally straighten everything up.  We even mananged to get two more boards on A side screwed down and some of the 140 screws replaced on C side.  Jim also trial fitted one of the screens on D end and it's looking good.   Not spectacular but steady progess.  This is what comes of not knowing the assembly sequence when the car was built.